Stud member for detachable fasteners.



No. 628,035. Patented Iuly 4, |899. E. PRINGLE.

STUD MEMBER FOR DETACHABLE FASTENEBS.

(Application filed Mar. 3. 1.898.) (No Model.)

` wmv v UNITED y ASTATES `vPATENT OFFICE.

EUGENE PRINGIIE, OF lGrLOVERSVILLE, NEW YORK, ASSIGNOR TO BRADT &;SHIPMAN, OF DE KALB, ILLINOIS.

STUD MEMBER FOR D ETACHA'BLE FASTENERS.

vSPIECIFICATION forming part of Letters Patent No. 628,035, dated July4, 1899.

Original application iiled April 2 2, 1896, Serial No. 588,585. Dividedand this application led March 3, 1898. Serial No.

672,370. (Novmodel.)

T a/ZZ whom t may concern:

Beit known that I, EUGENE PRINGLE, a citizen of the UnitedStates,residing at Gloversville, in the county of Fulton and State ofNew York, have invented certain new and useful Improvements `in StudMembers for Detachable Fasteners; and I do hereby declare the followingto be a full, clear, and eX- act description of the invention, such aswill io enable others skilled in the art to which it appertains to makeand use the same.

The present invention relates to separable buttons or fastening devicessuch as are-employed on gloves and other articles; and thisr 5application is a Jdivision of an application filed by me April22, 1896,Serial No. 588,585,which has since resulted in Patent No. 600,114, datedMarch l, 1898, and in which were originally shown, described, andclaimed both zo socket and stud members of na separable button. rlhatapplication'has been restricted to the socket member, and the presentapplica-1 tion relates to the stud member.v

The principal object of the invention is to prpvide a construction ofstud member wherein the parts thereof may be effectively united byupsetting or crimping one within the other, while at the same timepermitting the use of a comparatively thin outer shell of bulb form 3oand wherein the parts will accommodate themselves to varying thicknessesof material withoutin the least impairing the clenching or crimpingeffect.

The invention entirelyovercomes the diffi- 3 5 cultes heretoforeencountered in the manufacture of stud members for separable buttonsarising out of attempts to effect a clenching or crimping action byforcing together a pointed rivet and a bulb-form shell, in which v 4ocase the point of such'rive't either enters the slit which may alreadyexist in the shell or makes an opening for itself and breaks open theshell., This difficulty has made necessary the employment of a specialclenching-piece within the bulb-form shell j but my invention obviatesany such necessity,\vhile at the same time removing the objection to thepointed rivet when used without a clenching-piece.

With the above-stated objectsl in view the 5o invention consists incertain novel features of construction and combinations of parts, theessential elements of which are recited in lthe appended claims and adetailed description of preferred forms of embodiment of which ishereinafter given. 55

The drawings which accompany and form part of this specificationillustrate different forms in which the invention may be embodied. v

Of said drawings, Figures 1 and 2 represent 6o completed stud members incross section, illustrating different clenching effects which may resultin the joinder of the two parts of the stud member. Fig. 3 representsthe bulbform shell or head in cross-section. Fig. 4 65 represents therivet member in cross-section. Fig. 5 represents a complete separablebutton or fastening device in cross-section, showing my inventionembodied therein; and Fig. 6 represents a modified form of rivet, alsoin 7o cross-section.

In the drawings, the letter 7o designates a hollow bulb-form head orshell having a baseiiange 7c' and a catch-groove or annular recess 7o"thereabove, and the'letter Z designates a 75 round top orobtuse-endedrivet havingabaseflange Z and providedwith a slit fm, extending part waythrough its length from the upper end, as clearly shown in Fig. 4. Ahole having been previously provided inthe ma- 8o terial, when the rivetis passed through the samey and into the hollow head the upper slittedportion is crimped or upset within said head, as shown in Fig. 1, orunder certain conditions the upset end of the rivet may assume the shapeshown in Fig. 2 or any irregular or crinkled or b'urred form which willinsure thesecure attachment of the stud to the material, and the burredor crinkled portion being concealed within 'thevhollow portion of 9otheheadof lthe stud the appearance thereof is not marred or disigured byrough or unsightly exterior projections. It will also be noted that theattaching-rivet may be comparatively long, thus permitting considerablevariation in range of thickness of material to be used withoutalteration in the4 length or shape yof either the rivet or 'headportionof the stud, as the lamountor extent to vwhich the end of the vrivetwill be burred will deroo pend upon the distance between the ilanges ofthe two members comprising the stud, and this distance will conform tothe thickness of material clamped between them by the pressure of theupsetting-tools.

It has been extremely difficult heretofore to attach a slitted orresilient stud member to the material by means of a rivet or eyeletwhich passed up into the hollow portion of the stud-head, owing to theliability of the pointed end of the rivet or the edge of the eyeletcatching into the edges of the slit, and thus spreading, perforating, orchanging the shape of the stud-head. Owing to this difficulty it hasbeen customary to use a separate clenching-piece in such slitted studsto upset the end of the rivet or eyelet. In fact, slitted studs have notheretofore been attached to the material by the use of an eyelet orrivet alone without a clenching-piece, especially when said rivet is tobe upset by pressure of the head of the rivet against the inner surfaceof the stud-head. One of the especial advantages arising from the use ofmy rivet is that a stud of comparatively thin material may be attachedto the fabric, and the upset or crinkled end of the rivet serves as areinforcement, owing to the fact that it conforms to the interior shapeof the stud-head and backs it up, while it also adds to its springaction, if slitted, as it sustains and reinforces the spring-walls ofthe stud-head.

If an unslitted head is used, it can be made of light material, as inthis class of fasteners, many of which are used on thin gloves, weighthas much to do with the selection and practicability of a fastener, asfrom two to ten of these fasteners are used on a pair of gloves.Further, if quite thin material is used in the stud-head, owing to thefact that the top of the fastening-rivet is rounded and slitted andthereby weakened the finish of the stud-head is not injured nor thematerial dented, distorted, or marred during the setting operation, ofwhich there would be danger in using other forms of fastening-rivets.The top end of my rivet being slitted and thus weakened when it strikesthe inner surface of the studhead is readily crinkled and folded uponitself within the head and above the groove, thus insuring a permanentattachment to the material and allowing for a very considerable range ofthickness of material to which the stud may be attached, and with myrivet the outer surface of the head of the stud is always smooth and thematerial is tightly held between the flanges of the bulb-form head andrivet. I may find it desirable to make more than one slit in the rivet,and I tion above mentioned, and it will be seen that the two members soconform with each other in their interlocking and contacting portions asto eifectually obviate a wabbling action between them. It may be added,however, that while the stud member herein described is admirablyadapted for use with the forms of socket members shown and described inmy original application it is nevertheless capable of conjoint use withother forms of socket members.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent of the United States, is

l. A stud member of a separable fastener consisting of a hollowbulb-form head having a base-flange designed to be secured upon one sideof the material, and a fastening-rivet therefor; said rivet having abase-flange and an elongated shank formed with an obtuse end slitted asdescribed and adapted to be passed through a previously-formed hole inthe material and into said head and upset against the inner surfacethereof, thus invisibly securing the stud to the material, whereby athin shell may be used for the head of the stud and the head and riveteectively united without deformingorbreakingsaid head, substantially asdescribed.

2. A stud member for separable fasteners composed of a hollow bulb-formhead having a base-flange and an external socket-memberengaging grooveor annular recess above said flange, combined with a hollow flangedfastening-rivet having the upper end of its shank slitted and. formedwith a blunt upper end; said slitted shank being adapted to pass througha previously-formed hole in the material into said head and to be upsettherein, as and for the purpose set forth.

3. In a separable fastener, the socket member in combination with a studmember comprising a suitable hollow head having a baseiiange and acatch-groove below said head, and a slitted fastening-rivet having around or obtuse slitted end and a base-flange; said end being bent orfolded within said hollow head and firmly clamping the material betweenthe flanges of the head and. rivet, substantially as described.

4. A stud member for separable fasteners composed of a hollow bulb-formhead provided with a base-flange and an external socket-member-engaginggroove or annular recess above said ilange,combined with a baseangedfastening-rivet having a stern rising from said iiange and provided witha round or obtuse end and slitted through said end to allow it to easilyspread or upset within the hollow head of said stud and firmly clamp thematerial between the anges of the head and rivet.

5. In a separable fastener, the socket member, in combination with astud member comprising a suitable hollow head adapted to fitsaid socketmember and having a base-fiange and a catch-groove below said head, anda IOO IIO

fastening-rivet having a blunt upper end In testimony whereof I afx mysignature slitted to weaken it and thereby allow it to in presence oftwo Witnesses.' readily spread and conform to the inner surface of thestud-head, thus firmly securing EUGENE PRNGI-E 5 the stud to thematerial Without deforming Witnesses:

the head of the stud, substantially as and for C. L. SMITH,

the purpose set forth. F. S. DEMING.

